CVE-2023-39522 json
Username enumeration attack in goauthentik
published 2023-08-29 3 y ago modified 2026-09-10 1 mo ago also BIT-authentik-2023-39522 , EUVD-2023-2364 , GHSA-vmf9-6pcv-xr87
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
goauthentik is an open-source Identity Provider. In affected versions using a recovery flow with an identification stage an attacker is able to determine if a username exists. Only setups configured with a recovery flow are impacted by this. Anyone with a user account on a system with the recovery flow described above is susceptible to having their username/email revealed as existing. An attacker can easily enumerate and check users' existence using the recovery flow, as a clear message is shown when a user doesn't exist. Depending on configuration this can either be done by username, email, or both. This issue has been addressed in versions 2023.5.6 and 2023.6.2. Users are advised to upgrade. There are no known workarounds for this issue.
Patch / fix
- bitnami authentik 2023.5.6, 2023.6.2
- goauthentik authentik 2023.5.6, 2023.6.2
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.62% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | authentik | <2023.5.6 >=2023.6.0, <2023.6.2 |
2023.5.6 2023.6.2 |
Affected products
- goauthentik authentik
Classification
- Weakness
-
- CWE-203 Observable Discrepancy
References
Sources
- CVE List CVE-2023-39522
- GitHub Advisory GHSA-vmf9-6pcv-xr87
- NVD CVE-2023-39522
- OSV BIT-authentik-2023-39522
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